<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<title>jQuery UI Slider - Slider scrollbar</title>
<link rel="stylesheet"
	href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css" />
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<link rel="stylesheet" href="/resources/demos/style.css" />
<style>
.scroll-pane {
	overflow: auto;
	width: 99%;
	float: left;
}

.scroll-content {
	width: 2440px;
	float: left;
}

.scroll-content-item {
	width: 100px;
	height: 100px;
	float: left;
	margin: 10px;
	font-size: 3em;
	line-height: 96px;
	text-align: center;
}

.scroll-bar-wrap {
	clear: left;
	padding: 0 4px 0 2px;
	margin: 0 -1px -1px -1px;
}

.scroll-bar-wrap .ui-slider {
	background: none;
	border: 0;
	height: 2em;
	margin: 0 auto;
}

.scroll-bar-wrap .ui-handle-helper-parent {
	position: relative;
	width: 100%;
	height: 100%;
	margin: 0 auto;
}

.scroll-bar-wrap .ui-slider-handle {
	top: .2em;
	height: 1.5em;
}

.scroll-bar-wrap .ui-slider-handle .ui-icon {
	margin: -8px auto 0;
	position: relative;
	top: 50%;
}
</style>
<script>
	$(function() {
		//scrollpane parts
		var scrollPane = $(".scroll-pane"), scrollContent = $(".scroll-content");
		//build slider
		var scrollbar = $(".scroll-bar")
				.slider(
						{
							slide : function(event, ui) {
								if (scrollContent.width() > scrollPane.width()) {
									scrollContent
											.css(
													"margin-left",
													Math
															.round(ui.value
																	/ 100
																	* (scrollPane
																			.width() - scrollContent
																			.width()))
															+ "px");
								} else {
									scrollContent.css("margin-left", 0);
								}
							}
						});
		//append icon to handle
		var handleHelper = scrollbar.find(".ui-slider-handle").mousedown(
				function() {
					scrollbar.width(handleHelper.width());
				}).mouseup(function() {
			scrollbar.width("100%");
		}).append("<span class='ui-icon ui-icon-grip-dotted-vertical'></span>")
				.wrap("<div class='ui-handle-helper-parent'></div>").parent();
		//change overflow to hidden now that slider handles the scrolling
		scrollPane.css("overflow", "hidden");
		//size scrollbar and handle proportionally to scroll distance
		function sizeScrollbar() {
			var remainder = scrollContent.width() - scrollPane.width();
			var proportion = remainder / scrollContent.width();
			var handleSize = scrollPane.width()
					- (proportion * scrollPane.width());
			scrollbar.find(".ui-slider-handle").css({
				width : handleSize,
				"margin-left" : -handleSize / 2
			});
			handleHelper.width("").width(scrollbar.width() - handleSize);
		}
		//reset slider value based on scroll content position
		function resetValue() {
			var remainder = scrollPane.width() - scrollContent.width();
			var leftVal = scrollContent.css("margin-left") === "auto" ? 0
					: parseInt(scrollContent.css("margin-left"));
			var percentage = Math.round(leftVal / remainder * 100);
			scrollbar.slider("value", percentage);
		}
		//if the slider is 100% and window gets larger, reveal content
		function reflowContent() {
			var showing = scrollContent.width()
					+ parseInt(scrollContent.css("margin-left"), 10);
			var gap = scrollPane.width() - showing;
			if (gap > 0) {
				scrollContent.css("margin-left", parseInt(scrollContent
						.css("margin-left"), 10)
						+ gap);
			}
		}
		//change handle position on window resize
		$(window).resize(function() {
			resetValue();
			sizeScrollbar();
			reflowContent();
		});
		//init scrollbar size
		setTimeout(sizeScrollbar, 10);//safari wants a timeout
	});
</script>
</head>
<body>
	<div class="scroll-pane ui-widget ui-widget-header ui-corner-all">
		<div class="scroll-content">
			<div class="scroll-content-item ui-widget-header">1</div>
			<div class="scroll-content-item ui-widget-header">2</div>
			<div class="scroll-content-item ui-widget-header">3</div>
			<div class="scroll-content-item ui-widget-header">4</div>
			<div class="scroll-content-item ui-widget-header">5</div>
			<div class="scroll-content-item ui-widget-header">6</div>
			<div class="scroll-content-item ui-widget-header">7</div>
			<div class="scroll-content-item ui-widget-header">8</div>
			<div class="scroll-content-item ui-widget-header">9</div>
			<div class="scroll-content-item ui-widget-header">10</div>
			<div class="scroll-content-item ui-widget-header">11</div>
			<div class="scroll-content-item ui-widget-header">12</div>
			<div class="scroll-content-item ui-widget-header">13</div>
			<div class="scroll-content-item ui-widget-header">14</div>
			<div class="scroll-content-item ui-widget-header">15</div>
			<div class="scroll-content-item ui-widget-header">16</div>
			<div class="scroll-content-item ui-widget-header">17</div>
			<div class="scroll-content-item ui-widget-header">18</div>
			<div class="scroll-content-item ui-widget-header">19</div>
			<div class="scroll-content-item ui-widget-header">20</div>
		</div>
		<div class="scroll-bar-wrap ui-widget-content ui-corner-bottom">
			<div class="scroll-bar"></div>
		</div>
	</div>
</body>
</html>